IWC Perpetual Calendar Chronograph

A perpetual calendar is like a small computer on your wrist.

Think of it this way: Imagine a watch that keeps track of not only the time, but also the date, the day of the week, and the month, and also tells you whether it's a leap year or not, and what the current phase of the moon is. Oh, and one more thing — imagine it does all of this mechanically, using springs and gears, and that you only have to adjust it once every century or so. Crazy, right?

Perpetual calendars aren't the first complication most associate with IWC, but the brand has some incredible perpetuals. This piece is one example. A Reference IW375615, this piece has utilitarian charm and high horology complication, all packaged in one beautifully executed package.

43mm in diameter and executed in stainless steel, this piece has an integrated bracelet that further situates it in the early 2000s when this model was produced. Furthermore, this watch is a chronograph, putting it in the upper echelons of grand complications.  

Any old wristwatch can tell the time. Few truly define it.

When an American watchmaker named Florentine Ariosto Jones arrived in Schaffhausen, Switzerland in 1868, he found a city almost frozen in time.

Though the Industrial Revolution had swept through America, in Switzerland the situation was very different. Watchmakers still plied their trades by their own firesides, as they had done for centuries. But Jones had in mind something different — an American-style factory where the watches would be designed and assembled in keeping with the old Swiss ways. His methods caught on, and soon there were 196 people employed at his factory.

Though the International Watch Company was founded 35 years before Wilbur and Orville Wright’s first flight, the association between IWC and aviation began just as the age of flight dawned: A pocket watch made by the company in the 1890s found its way into the pocket of one Robert Albert Lotter, a pilot in the German Luftwaffe who served with distinction during the First World War.

Two decades later, in 1936, IWC released a watch that set the standard for pilot’s watch design, the Spezialuhr für Flieger, or Special Pilot's Watch. Another would follow in 1940, the Beobachtungs-ühren (“observation watch”), which spawned an entire model line in IWC’s current collection called the Big Pilot. However, despite the Big Pilot’s current popularity, it was the Special Pilot’s Watch that would lay the cornerstone for IWC’s most iconic line: the Mark series of pilot’s watches.

IWC released the Mark XI in 1948 according to specifications set forth by the British Ministry of Defense. These watches had to be legible, compact, and able to withstand exposure to the magnetic fields emitted by instruments in an airplane’s cockpit. The Mark XI, therefore, had a black dial with large luminous Arabic numbers, while its incredibly robust Calibre 89 movement was encased in an iron cage. (Later, in the 1950s and 1960s, IWC would produce myriad dress watches in steel and gold based upon the Calibre 89 movement, which remain relatively plentiful on the vintage market.)

The Mark XI served as the basis for design inspiration for a robust line of pilot’s watches still being produced today – easily identifiable by their clean, uncluttered dials, robust cases, and outstanding quality.

Our Pledge

Analog:Shift stands behind the authenticity of our products in perpetuity.

Condition

Since our pieces are vintage or pre-owned, please expect wear & patina from usage and age. Please read each item description and examine all product images.

Warranty

We back each Analog:Shift vintage timepiece with a two-year mechanical warranty from the date of purchase.

International Buyers

Please contact us prior to purchase for additional details on shipping and payment options.

All of our watches include complementary insured shipping within the 50 states.

Most of our products are on hand and will ship directly from our headquarters in New York City. In some cases, watches will be shipped directly from one of our authorized partners.

We generally ship our products via FedEx, fully insured, within 5 business days of purchase. An adult signature is required for receipt of all packages for insurance purposes. Expedited shipping is available at an additional cost. We are also happy to hand deliver your purchase in Manhattan or you may pick it up at our showroom.

Returns must be sent overnight or by priority international delivery, fully insured and paid for by the customer. A restocking fee may apply. Watches must be returned in the same condition as initially shipped.

We welcome international buyers, please contact us prior to purchase for additional details on shipping and payment options.